A man bought some pencils for Rs 30 and some pens for Rs. 90 . The next day he again bought some pencils for Rs. 25. Then , he sold all the pencils for Rs. 20 and the pens for Rs. 70 . What was his net gain or loss ?

Answer

To find the net gain or loss of the man who bought and sold pencils and pens, we will follow these steps:

### Step 1: Calculate the Total Cost Price (CP)
The man bought:
- Pencils for Rs. 30
- Pens for Rs. 90
- Pencils again for Rs. 25

Now, we will add these amounts to find the total cost price.

\[ \text{Total CP} = 30 + 90 + 25 \]
\[ \text{Total CP} = 145 \text{ Rs.} \]

### Step 2: Calculate the Total Selling Price (SP)
The man sold:
- Pencils for Rs. 20
- Pens for Rs. 70

Now, we will add these amounts to find the total selling price.

\[ \text{Total SP} = 20 + 70 \]
\[ \text{Total SP} = 90 \text{ Rs.} \]

### Step 3: Calculate Net Gain or Loss
To find out whether the man made a gain or a loss, we subtract the total cost price from the total selling price.

\[ \text{Net Gain or Loss} = \text{Total SP} - \text{Total CP} \]
\[ \text{Net Gain or Loss} = 90 - 145 \]
\[ \text{Net Gain or Loss} = -55 \text{ Rs.} \]

Since the result is negative, it indicates a loss.

### Conclusion
The man incurred a loss of Rs. 55.

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